--- a/src/eric7/Plugins/CheckerPlugins/SyntaxChecker/SyntaxCheck.py	Fri Jul 29 16:29:31 2022 +0200
+++ b/src/eric7/Plugins/CheckerPlugins/SyntaxChecker/SyntaxCheck.py	Wed Aug 03 11:54:32 2022 +0200
@@ -190,6 +190,9 @@
     for worker in workers:
         worker.join()
         worker.close()
+    
+    taskQueue.close()
+    doneQueue.close()
 
 
 def workerTask(inputQueue, outputQueue):